Arturo De La Riva has been happily married to Eugenia for 10 years, with whom he has a daughter, named Aranza, however, they do not imagine that Eugenia´s cousin Sonia, is obsessively in love with Arthur in secret, leading her to cause a terrible tragedy.

Meanwhile, Isabel Lopez Cerdan spent two years believing she was married to Fernando Cordova, whom she loves above all everything.

Fate unites Isabel and Arturo on a heavenly beach, giving birth to a relationship that must defeat several hardships such as the manipulation Sonia puts on Aranza to make her reject Isabel, and Fernando´s hunger for revenge.